[issue21678] Add operation "plus" for dictionaries

[Terry J. Reedy]

Terry J. Reedy added the comment:

This has been proposed, discussed on both python-list and python-ideas, and rejected more than once because there are there are multiple possible response to multiple keys: keep first value, keep second value (.update), keep both (in a list), or keep neither and raise.

'Obvious' ideas like this should be floated on one of those two lists to find out past response.

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nosy: +terry.reedy
resolution:  -> rejected
stage:  -> resolved
status: open -> closed
type:  -> enhancement
versions: +Python 3.5 -Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21678>
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